* Use isset() to prevent a NOTICE being thrown (thanks Denis)
* Use isset() to prevent a NOTICE being thrown (thanks Denis)


git-svn-id: abaeb2b3ba5a94ed391a9405ad7d63d0414021c9@18430 44c647ce-9c0f-0410-b52a-842ac1e357ba

michaa76/ZendQueue,stakhanovist/queue,ripaclub/ZendQueue